Josh Sander, 15, is the Boston winner of Operation Sail’s “Star-Spangled Banner and War of 1812 Essay and Art Competition,” a contest for high school students to honor the 200th anniversary of the war. Sander, who will be a junior this fall at Newton South High School, won for his essay, “Baptism by Fire: The Revenue Cutter Service in the War of 1812.” “Revenue cutters,” or small schooners, were built and implemented under the supervision of Secretary of the Treasury Alexander Hamilton to ensure that tariffs were collected on all imported goods.